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  <title>Set the pattern used for the IntlDateFormatter</title>
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    <li>Set the pattern used for the IntlDateFormatter</li>
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  <div id="layout-content"><div id="intldateformatter.setpattern" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">IntlDateFormatter::setPattern</h1>
  <h1 class="refname">datefmt_set_pattern</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PHP 8, PECL intl &gt;= 1.0.0)</p><p class="refpurpose"><span class="refname">IntlDateFormatter::setPattern</span> -- <span class="refname">datefmt_set_pattern</span> &mdash; <span class="dc-title">Set the pattern used for the IntlDateFormatter</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-intldateformatter.setpattern-description">
  <h3 class="title">说明</h3>
  <p class="para">
   面向对象风格
  </p>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>IntlDateFormatter::setPattern</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$pattern</code></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   过程化风格
  </p>
  <div class="methodsynopsis dc-description"><span class="methodname"><strong>datefmt_set_pattern</strong></span>(<span class="methodparam"><span class="type"><a href="class.intldateformatter.html" class="type IntlDateFormatter">IntlDateFormatter</a></span> <code class="parameter">$formatter</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$pattern</code></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Set the pattern used for the IntlDateFormatter.
  </p> 
  </div>


 <div class="refsect1 parameters" id="refsect1-intldateformatter.setpattern-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">formatter</code></dt>

     <dd>

      <p class="para">
     The formatter resource.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">pattern</code></dt>

     <dd>

      <p class="para">
       New pattern string to use.
       Possible patterns are documented at <a href="https://unicode-org.github.io/icu/userguide/format_parse/datetime/" class="link external">&raquo;&nbsp;https://unicode-org.github.io/icu/userguide/format_parse/datetime/</a>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

   
 
 <div class="refsect1 returnvalues" id="refsect1-intldateformatter.setpattern-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
   Bad formatstrings are usually the cause of the failure.
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-intldateformatter.setpattern-examples">
  <h3 class="title">范例</h3>
   <div class="example" id="example-2455">
    <p><strong>示例 #1 <span class="function"><strong>datefmt_set_pattern()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$fmt&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">datefmt_create</span><span style="color: #007700">(<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'en_US'</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">FULL</span><span style="color: #007700">,</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">FULL</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'America/Los_Angeles'</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">GREGORIAN</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'MM/dd/yyyy'<br /></span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">'Pattern&nbsp;of&nbsp;the&nbsp;formatter&nbsp;is&nbsp;:&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">datefmt_get_pattern</span><span style="color: #007700">(</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">'First&nbsp;Formatted&nbsp;output&nbsp;with&nbsp;pattern&nbsp;is&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">datefmt_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">datefmt_set_pattern</span><span style="color: #007700">(</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'yyyyMMdd&nbsp;hh:mm:ss&nbsp;z'</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">'Now&nbsp;pattern&nbsp;of&nbsp;the&nbsp;formatter&nbsp;is&nbsp;:&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">datefmt_get_pattern</span><span style="color: #007700">(</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">'Second&nbsp;Formatted&nbsp;output&nbsp;with&nbsp;pattern&nbsp;is&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">datefmt_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
   <div class="example" id="example-2456">
    <p><strong>示例 #2 OO example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$fmt&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">(<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'en_US'</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">FULL</span><span style="color: #007700">,</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">FULL</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'America/Los_Angeles'</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">IntlDateFormatter</span><span style="color: #007700">::</span><span style="color: #0000BB">GREGORIAN</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #DD0000">'MM/dd/yyyy'<br /></span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">'Pattern&nbsp;of&nbsp;the&nbsp;formatter&nbsp;is&nbsp;:&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getPattern</span><span style="color: #007700">(),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">'First&nbsp;Formatted&nbsp;output&nbsp;is&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$fmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">setPattern</span><span style="color: #007700">(</span><span style="color: #DD0000">'yyyyMMdd&nbsp;hh:mm:ss&nbsp;z'</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">'Now&nbsp;pattern&nbsp;of&nbsp;the&nbsp;formatter&nbsp;is&nbsp;:&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getPattern</span><span style="color: #007700">(),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">'Second&nbsp;Formatted&nbsp;output&nbsp;is&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$fmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
   <p class="para">以上例程会输出：</p>
   <div class="example-contents screen">
<div class="cdata"><pre>
Pattern of the formatter is : MM/dd/yyyy
First Formatted output is 12/31/1969
Now pattern of the formatter is : yyyyMMdd hh:mm:ss z
Second Formatted output is 19691231 04:00:00 PST
</pre></div>
   </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-intldateformatter.setpattern-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
    <ul class="simplelist">
    <li class="member"><span class="function"><a href="intldateformatter.getpattern.html" class="function" rel="rdfs-seeAlso">datefmt_get_pattern()</a> - Get the pattern used for the IntlDateFormatter</span></li>
    <li class="member"><span class="function"><a href="intldateformatter.create.html" class="function" rel="rdfs-seeAlso">datefmt_create()</a> - Create a date formatter</span></li>
    </ul>
  </p>
 </div>

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